5401645121 has 2 divisors, whose sum is σ = 5401645122. Its totient is φ = 5401645120.

The previous prime is 5401645103. The next prime is 5401645141. The reversal of 5401645121 is 1215461045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5052366400 + 349278721 = 71080^2 + 18689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5401645121 is a prime.

It is not a weakly prime, because it can be changed into another prime (5401645141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700822560 + 2700822561.

It is an arithmetic number, because the mean of its divisors is an integer number (2700822561).

Almost surely, 2^5401645121 is an apocalyptic number.

It is an amenable number.

5401645121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5401645121 is an equidigital number, since it uses as much as digits as its factorization.

5401645121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 5401645121 is about 73495.8850616822. The cubic root of 5401645121 is about 1754.5887864304.

The spelling of 5401645121 in words is "five billion, four hundred one million, six hundred forty-five thousand, one hundred twenty-one".